Motorized window shade mechanism

ABSTRACT

A motorized window shade assembly for controlling an amount of light through a porthole. A spring roller is positioned by a first side of the porthole and has a torsion spring for imparting a rotating force to the spring roller. A shade is supported by the spring roller and has a first end fixed to the spring roller and a second end extendable over the porthole. A shade actuator is connected to the shade, the shade actuator having one or more of a pulley and cable for moving the second end of the shade across the porthole. A motor assembly is positioned proximate a second side of the porthole, the motor assembly having a motor which receives operating power from a power source. The motor is releasably coupled to the shade actuator for selectively supplying motor-controlled operation to the shade actuator.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention is directed to a motorized window shade assembly adapted in particular for use in windows of airplanes, that is readily assembled and installed, and which provides convenient and reliable operation. More particularly, the present invention is directed to an improved motorized window shade assembly for an airplane which provides a mechanism for opening a window shade in the assembly without electrical power, such as in an emergency condition.

2. Description of the Related Art

The motorized window shade assembly disclosed in U.S. Pat. No. 6,186,211 was a major improvement over other mechanisms of this type known at that time. For example, it was highly effective in reducing the number of components required, increasing reliability, and meeting the rigid requirements associated with use aboard aircraft. Further improvements of window shade mechanisms are disclosed in U.S. application Ser. No. 12/943,569 filed on Nov. 10, 2010, which is incorporated by reference herein.

In the event of an emergency condition in an airplane which, in certain instances, may result in a loss of cabin power and require an emergency landing, motorized window shades are rendered inoperable. Thus, any window shades that are partially or fully in their deployed (i.e. closed or light blocking) position, will remain in that position and cannot be easily opened. Although a passenger or flight crew member may be able to force a shade to its opened position by the application of manual force, such action may cause damage to certain components of the shade assembly. In addition, the existence of certain flight regulations require crew members to have visual confirmation of the outside environment of the aircraft before an airplane safety hatch and/or emergency egress chute is deployed. Thus, there is a need to provide airplane crew members with the ability to raise a shade of a motorized shade assembly to an opened position, such as in the event of a loss of cabin power, and without damaging components of the shade assembly.

SUMMARY OF THE INVENTION

One object of the present invention is to provide an improved motorized window shade assembly.

Another object of the present invention is to provide a motorized window shade assembly for an airplane having a manual override feature which allows the shade to be moved to an opened (i.e. not light blocking) position without the use of external electrical power.

A further object of the present invention is to provide a motorized window shade assembly for an airplane having two electrically deployable shades which can both be simultaneously moved from a fully or partially closed position to an opened position upon activation of a manual override switch.

These and other objects are attained in accordance with one aspect of the present invention directed to a motorized mechanism for operating a window shade for controlling the amount of light admitted through a window of an airplane. The motorized mechanism includes a window shade adapted to be extended from and retracted onto a torsion spring roller rod disposed proximate an airplane window or porthole. A motor is included in the window shade assembly and is coupled to a motor-driven pulley. A cable is looped between the motor-driven pulley and a second pulley, the second pulley being secured to the housing remotely from the first pulley and, preferably, to an end of the torsion spring roller rod. A component is coupled to a leading edge of the window shade and guided by a rail assembly based on motion of the cable in response to motor driven rotation of the motor-driven pulley to extend or retract the window shade across the window. The torsion spring roller rod is mounted on one side of the airplane window (e.g. the top) and the motor is mounted on the other side (e.g. the bottom). The motor is movably seated in a cam holder connected to a manual switch. Activation of the switch unseats the motor from the cam holder and allows the shade to move to its closed position under the influence of stored mechanical energy in the torsion spring roller.

In accordance with one aspect of the invention, a motorized window shade assembly is disclosed for controlling an amount of light through a porthole formed in a panel. The window shade assembly includes a spring roller positioned proximate a first side of the porthole and having a torsion spring for imparting a rotating force to the spring roller, a shade supported by the spring roller and having a first end fixed to the spring roller and a second end extendable over the porthole, a shade actuator connected to the shade, the shade actuator having one or more of a pulley and cable for moving the second end of the shade across the porthole. The shade assembly further includes a motor assembly positioned proximate a second side of the porthole, the motor assembly having a motor which receives operating power from a power source, the motor being releasably coupled to the shade actuator for selectively supplying motor-controlled operation to the shade actuator, wherein when the motor is coupled to the shade actuator and operating power is supplied to the motor, the second end of the shade can be selectively extended over, and retracted from, the porthole. The shade assembly also includes a manually operated mechanism connected to the motor assembly, the mechanism causing decoupling of the motor from the shade actuator during activation of the release mechanism, wherein if the second end of the shade is positioned away from the spring roller, the second end of the shade is retracted towards the spring roller under the influence of the rotating force, and wherein the motor is re-coupled to the shade actuator upon deactivation of the mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a window shade assembly which includes a motorized window shade mechanism in accordance with an embodiment of the invention.

FIG. 2 is a front view of the window shade assembly of FIG. 1 with the shade fabric removed.

FIG. 3 is a right-side view of the shade fabric rolls of the window shade assembly of FIG. 1.

FIG. 4 is a cross-sectional side view taken at line 4-4 of FIG. 1.

FIG. 5 is a cross-sectional side view taken at line 5-5 of FIG. 1.

FIG. 6 is a close-up, top, perspective view of the drive motor and manual release assembly employed in the window shade assembly of FIG. 1.

FIG. 7 is a side view of a motor mount used for mounting a drive motor in accordance with an embodiment of the invention.

FIG. 8 is a top view of the motor mount assembly of FIG. 7 and depicting a manual activation switch.

FIG. 9 is a perspective view of the window shade assembly of FIG. 1.

FIG. 10 shows a perspective view of a motor mount assembly.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

With reference to FIGS. 1, 2 and 3, a window shade assembly 1 is installed on an airplane side panel having a porthole 3 and window shades 5, 7. The shades are movable through operation of a respective motor across the porthole 3 to control the amount of light entering the porthole. The shades include an opaque shade 5 constructed of an opaque fabric to prevent most, if not all, of the light from entering the porthole, and a pleated shade 7 constructed of a translucent fabric to allow a portion of light through the porthole when the shade 7 is extended over the porthole in its intended manner.

The pleated shade 7 is made from any known type of pleated material, such as fabric, etc., conventionally used for window shades which can be compressed relatively tightly to a height less than one-half inch, for example, so that it occupies a minimal amount of space proximate the porthole 3 to provide an unimpeded view and to allow light to pass completely unobstructed through the porthole. As shown in FIG. 3, the pleated shade has a zigzag cross-section and is connected at a first or fixed end to a shade support 50. A second or leading end of the pleated shade 7 is attached to a motor controlled movable rail member 25 which provides for expansion and contraction of the shade 7 across the porthole 3 in a manner explained below.

Guide holes are provided near left-side and right-side edges of the pleated shade 7, through which a left-side shade alignment cord 52 (FIG. 3) and a right-side shade alignment cord (not shown in FIG. 3) are provided to ensure proper alignment of the pleats in the shade 7 as the shade is expanded and contracted. Each alignment cord is fixed at a first anchor point 53 on the shade support 50 and at a second anchor point 54 (see FIG. 2) positioned near the drive motors, as explained more fully below.

In addition to the pleated shade 7, the translucent shade also includes a carrier fabric such as a non-pleated translucent fabric (hereinafter, “phantom fabric”) positioned between the pleated shade 7 and the porthole 3. As used herein, “translucent shade” includes the pleated shade 7 and the phantom fabric 9. The phantom fabric 9 has a first or fixed end attached to a spring roller 70 (FIG. 3) in any known manner, such as by an adhesive or fastener. A second or leading end of the phantom fabric is joined, along with the leading end of the pleated shade 7, to the movable rail member 25 such that, during normal operation, the pleated shade and phantom fabric will, together, extend across and retract from the porthole 3 based on motion of the rail member 25.

The rail member 25 operates in a similar manner to the guide rail of the device depicted and described in U.S. application Ser. No. 12/943,569. For example, the rail member 25 is maintained between a left-side frame member and a right-side frame member (47, 49 in FIG. 1) and is attached to a synchronous cable 63 (see FIG. 6) driven by a motor 69 that is activated by a user operated switch. Selecting “up” on the switch will cause motor 69 to drive the synchronous cable in a first direction to raise the guide rail 25—thereby simultaneously collapsing the pleated shade 7 and causing the phantom fabric 9 to be rolled up on the spring roller 70. Selecting “down” on the switch will cause the motor 69 to drive the synchronous cable 63 in an opposite direction to expand the pleated shade and unroll the phantom fabric from the spring roller 70.

The spring roller 70 includes a torsion spring which, when tensioned, exerts a torque on the spring roller to bias the phantom fabric 9 in an “up” or open direction, i.e., to cause an extended portion of the phantom fabric 9 to roll up on the spring roller. The spring roller 70 operates in a manner similar to a standard shade roller mechanism typically used for home window treatments, wherein, so long as a tension is applied to a free end of a shade material connected to such a roller mechanism, or the roller mechanism is otherwise locked to prevent rotation, the shade material will remain in its extended position. However, if the shade mechanism is unlocked or a force on a free end of the shade material is removed, the torsion spring will cause the shade material to roll up around the roller mechanism.

The opaque shade 5 has a fixed end attached to a second spring roller 72 positioned above, and slightly misaligned with, the spring roller 70 (FIG. 3). A first or fixed end of opaque shade 5 can be attached to the spring roller 72 in any known manner, such as by an adhesive or fastener. A second or leading end of the opaque shade is fixed to a movable rail member 25 a (see FIG. 2) such that, during normal operation, the opaque shade 5 will extend across and retract from the porthole 3 based on motion of the rail member 25 a in a manner similar to the operation of rail member 25.

Focusing initially on the operation of the translucent shade 7, an axle, or shaft, 33 is configured to be inserted into a through-hole in the movable rail member 25. As best shown in FIGS. 2 and 4, the ends of axle 33 protrude from the rail member so that they can carry gears. One such gear is identified as gear 35 and engages a rack 46 in the left-side frame member 47. Another gear (not shown in the figures but identified as gear 37 in U.S. application Ser. No. 12/943,569) engages a rack 48 in the right-side frame member. Each gear is also connected to a carrier. In particular, an active carrier 36 is positioned about gear 35 and a passive carrier 38 is positioned about the right-side gear. The synchronous cable 63 is attached at both ends, via set screws 80, 81, for example, to the active carrier 36 and extends across a motor drive gear 126 (FIG. 6), driven by motor 69, and a pulley 64 mounted at a left end of the opaque shade spring roller rod 72 (FIG. 9). When motor 69 is operated, the motor will engage the synchronous cable 63 by engaging a pulley 126 (FIG. 6) which, in turn, will move the active carrier 36 via engagement of gear 35 with rack 46 to cause movement of the translucent shade. Because of connection between the active carrier 36 to the passive carrier 38 by the axle 33 in rail member 25, when the active carrier 36 is driven, the passive carrier 38 will move via the right-side gear against rack 48.

A similar operating arrangement is provided for the opaque shade 5 except that a synchronous cable 63 a is used by motor 69 a to directly drive an active carrier 44 positioned in the right-side rack 48 which causes indirect movement, via coupling with axle 33 a in rail member 25 a, of a passive carrier 42 engaged with the left-side rack 47. As explained more fully in U.S. application Ser. No. 12/943,569, each passive carrier provides a pass-through bore through which the respective synchronous cables 5 (63, 63 a) can extend so that operation of, for example, motor 63 for controlling movement of the translucent shade will not cause movement of the opaque shade and vice versa.

With reference to FIGS. 4 and 5, and as described above, the active and passive carriers 36, 38 for the opaque and translucent shades 5, 7 are disposed for movement along a common pair of racks 46, 48. It is contemplated that both shades can be controlled independently of each other. For example, motor 69 can be activated to extend the translucent shade over the porthole 3 and then motor 69 a can be activated to extend the opaque shade partially (or completely) over the porthole. However, because the carriers for both shades share a common set of racks, and the opaque shade carriers 42, 44 are positioned in the racks above the translucent shade carriers 36, 38, the carriers 42, 44 for the opaque shade are configured as having an extension region 45. The extension regions are dimensioned such that they can extend in a gap behind the active and passive carriers 36, 38 of the translucent shade. This feature is best shown in FIG. 5 where the leading end of the opaque shade 5 is affixed to the extension regions 45 such that both shades can be extended a distance coterminous with each other. Without extension region 45, the leading end of the opaque shade 5 would not be capable of extending to the same vertical position of the translucent shade 7.

With reference to FIGS. 1, 2, and 6-10, a manual shade mechanism in accordance with an embodiment of the present invention will now be described. Under normal operating conditions, movement of each shade is controlled by its respective motor 69, 69 a. In the depicted embodiment, motor 69 controls the movement of the translucent shade 7 (along with the coupled phantom fabric 9) upon selection of an appropriate function switch, e.g., “up”, “down”. Likewise, motor 69 a controls movement of the opaque shade 5. Operating power is supplied to the motors from an airplane power bus in a manner well known in the art and as more fully described in U.S. application Ser. No. 12/943,569.

A close-up depiction of a motor assembly having a mount 100 and the motor 69 is shown in FIGS. 6, 7, 8 and 10. It will be appreciated that a similar motor assembly having a mount for motor 69 a is provided. For the sake of clarity, and unless otherwise warranted, only a discussion of the motor assembly having the mount 100 is provided below. The mount 100 includes a movable table 102 slidably engaged to a fixed support 104 via a slot connection. The fixed support includes one or more throughholes 103 for accommodating fasteners 101 to connect the mount 100 to a bottom frame member 51 (FIG. 2).

A gear support 110 is provided for mounting a shaft 130 to the frame member 47. The shaft 130 is connected to a pair of bearing gears 120, 121 and a pulley 126. The pulley includes a slot 127 for receiving the synchronous cable 63 so that rotation of the shaft 130 will cause raising and lowering of the translucent shade. Coupling of the motor 69 to the shaft 130 allows the motor to raise and lower the translucent shade. This coupling is accomplished by providing a rotor seat 125 in the shaft 130. With the motor 69 mounted on the motor mount 100 and, specifically, on the movable table 102, a front face of the motor is received in an upstanding part 106 of the movable table. The upstanding part contains a throughhole 108 through which a rotor 128 (see FIG. 2) of the motor extends so that, under normal operating conditions, the rotor 128 is received in rotor seat 125 for operating the pulley 126.

As shown in FIGS. 7 and 8, movable table 102 has a slot 112 positioned over a well 105 formed in fixed support 104 to accommodate a coil spring 114. The coil spring is anchored at one end against a contact point (“X”) on movable table 102, and at the other end against another contact point (“Y”) on the fixed support 104. The spring 114 biases the movable table 102 toward the pulley shaft 130 to seat the rotor 128 in rotor seat 125.

As explained above, under normal operating conditions electrical power from the airplane is used to power the motors 69, 69 a such that when a user activates a control switch, the motors will raise or lower the translucent shade 7 and the opaque shade 5 in their intended manner. In the event of a power failure or an otherwise malfunction of the motorized shade assembly, and in the event the shades are deployed over the porthole 3—thereby obstructing view to the environment outside of the airplane—the shades must be capable of being returned to their opened position so that the outside environment of the airplane can be observed. This is accomplished, in accordance with the present invention, by providing a passive mechanism such as a switch 150. It is intended that the passive switch be accessible via a throughhole on an airplane panel behind which the shade assembly is installed. For example, activation of the mechanism 150 can be accomplished by inserting a narrow tool, such as a pin, etc., into the throughhole to activate the mechanism 150.

As best shown in FIGS. 6 and 8, the mechanism 150 includes an activation surface or “button” 151 which is preferably accessible through a front panel by inserting an appropriate tool in a direction indicated by arrow “B”. mechanism 150 also includes a pair of cam arms 152, 152 a which are connected at one end to the switch 150 and at another end to respective pivot fasteners 154, 154 a. Each cam arm includes an anchor 156, 156 a for receiving an end of a connection cable 118. The other end of connection cable 118 is anchored at 119 to an actuator arm 116 formed at an end of the movable table 102. The connection cable 118 can be made of any suitable gauge wire or of a strap or other type of connector, so long as it can serve its intended purpose of moving table 102 in the intended manner discussed above. Switch 150 also includes a cover plate 160 (FIG. 6) which serves as a dust cover and, otherwise protects cam arms 152, 152 a from being obstructed.

In a typical environment of the motorized window shade assembly 1, the translucent and opaque shades may be fully or partially deployed to extend over the porthole 3. As explained above, when the shades are extended, they are unrolled, via movement of synchronous cables 63, 63 a from their respective spring rollers 70, 72. The unrolling of the shades increases the spring tension in the spring rollers, as is known in the art. The motor 69, 69 a are of a particular design wherein, when the rotor 128 is seated in pulley shaft 130 and the motor is in an “off” state, i.e. an up/down switch is not selected, the spring tension in the spring rollers 70, 72 is insufficient to cause rotation of the rotor. If this was not the case, involuntary raising of the shades would result when the motors are “off”. It should be appreciated, however, that for heavier shades and/or for other types of motors, a brake mechanism may be employed to hold the shades in their intended deployed positions.

In the event operating power to the shade assemblies ceases, or a shade assembly otherwise malfunctions, the shades can be returned to their fully-opened positions by activation of switch 150. This is accomplished by applying a force to the button 151 in a direction of arrow B shown in FIG. 8. Activation of the switch causes rotation of cam arm 152 (in a counter-clockwise direction). That rotation causes movement of connection cable 118 as shown by direction arrow C which, in turn, urges movable table 102 against the force of spring 114 in direction C.

When movable table 102 is moved, rotor 128 becomes unseated from rotor seat 125. Once this occurs, torsion spring force in the spring roller 70 will cause the translucent shade 7 to roll up about its spring roller 70 and, thereby, expose the porthole 3. Specifically, the spring roller 70 will roll up the phantom fabric 9 which will cause collapsing of the pleated shade. As will be appreciated, raising of the opaque shade 5 occurs in a similar manner via rotation of cam arm 152 a in a clockwise direction which will cause the opaque shade 5 to roll up on spring roller 72.

It should be noted that the switch 150 is a passive, i.e. “mechanical” switch which does not require any electricity for activation. The switch, therefore, allows the deployed shades to be raised by way of stored torsion spring force from the respective spring rollers 70, 72. It should also be noted that the switch 150 will need to be depressed for a specific amount of time (typically less than several seconds) so that the rotor 128 remains dislodged from the rotor seat 125 until the shades are returned to their fully-opened positions above porthole 3. Once the switch 150 is released, table 102 returns to its position depicted in FIG. 7 under the urging of spring 114 to, again, couple motor 69 with pulley shaft 130 whereupon normal motorized shade operation can resume. 

1. A motorized window shade assembly for controlling an amount of light through a porthole formed in a panel, the porthole having a first side and second side, comprising: a spring roller positioned proximate the first side of the porthole and having a torsion spring for imparting a rotating force to the spring roller; a shade supported by the spring roller and having a first end fixed to the spring roller and a second end extendable over the porthole; a shade actuator connected to the shade, the shade actuator having one or more of a pulley and cable for moving the second end of the shade across the porthole; a motor assembly positioned proximate the second side of the porthole, the motor assembly having a motor which receives operating power from a power source, the motor being releasably coupled to the shade actuator for selectively supplying motor-controlled operation to the shade actuator, wherein when the motor is coupled to the shade actuator and operating power is supplied to the motor, the second end of the shade can be selectively extended over, and retracted from, the porthole; and a manually operated mechanism connected to the motor assembly, the mechanism causing decoupling of the motor from the shade actuator during activation of the mechanism, wherein if the second end of the shade is positioned away from the spring roller, the second end of the shade is retracted towards the spring roller under the influence of the rotating force, and wherein the motor is re-coupled to the shade actuator upon deactivation of the mechanism.
 2. The motorized window shade assembly of claim 1, wherein the motor assembly comprises a movable table and a spring which biases the table in a direction towards the shade actuator so that the motor is in a position to control operation of the shade actuator.
 3. The motorized window shade assembly of claim 2, wherein the mechanism comprises an actuator arm connected to the table for moving the table in a direction away from the shade actuator to cause decoupling of the motor from the shade actuator upon activation of the release mechanism.
 4. The motorized window shade assembly of claim 3, wherein the mechanism further comprises a cam arm.
 5. The motorized window shade assembly of claim 3, wherein the panel is a panel for an airplane, wherein the first side of the porthole comprises a top of the porthole and wherein a second side of the porthole comprises a bottom of the porthole.
 6. The motorized window shade assembly of claim 1, wherein the shade comprises a pleated fabric and a phantom fabric, the phantom fabric being positioned between the porthole and the pleated fabric, and wherein the first end of the shade comprises a first end of the phantom fabric.
 7. The motorized window shade assembly of claim 6, wherein the pleated fabric and phantom fabric comprise translucent material.
 8. The motorized window shade assembly of claim 3, wherein the shade comprises a pleated fabric and a phantom fabric, the phantom fabric being positioned between the porthole and the pleated fabric, and wherein the first end of the shade comprises a first end of the phantom fabric.
 9. The motorized window shade assembly of claim 8, wherein the spring roller comprises a first spring roller, the shade comprises a first shade, the shade activator comprises a first shade activator, and the motor assembly comprises a first motor assembly, the shade assembly further comprising: a second spring roller proximate the first spring roller; a second shade supported by the second spring roller and having a first end fixed to the second spring roller and a second end extendable over the porthole; a second shade actuator connected to the second shade and having one or more of a pulley and cable for moving the second end of the second shade across the porthole; a second motor assembly positioned proximate the second side of the porthole, the second motor assembly having a motor releasably coupled to the second shade actuator, wherein when the second motor is coupled to the second shade actuator and operating power is supplied to the second motor, the second end of the second shade can be selectively extended over, and retracted from, the porthole; and wherein said manually operated mechanism is connected to the second motor assembly, the mechanism causing the first and second motors to decouple from their respective first and second shade actuators, wherein if the second ends of the first and second shades are positioned away from their respective first and second spring rollers, the second ends of the first and second shades are retracted towards their respective spring rollers under the influence of their respective rotating forces, and wherein the first and second motors are re-coupled to their respective shade actuators upon deactivation of the mechanism.
 10. The motorized window shade assembly of claim 9, wherein the second shade comprises an opaque material.
 11. The motorized window shade assembly of claim 9, wherein the manually activated mechanism comprises a contact surface for engagement by a tool applying a pressing force.
 12. An improved motorized window shade assembly for controlling an amount of light through a porthole formed in a panel, the porthole having a first side and second side, the window shade assembly having a spring roller positioned proximate the first side of the porthole and having a torsion spring for imparting a rotating force to the spring roller, a shade supported by the spring roller and having a first end fixed to the spring roller and a second end extendable over the porthole, a shade actuator connected to the shade, the shade actuator having one or more of a pulley and cable for moving the second end of the shade across the porthole, and a motor positioned proximate a second side of the porthole which receives operating power from a power source, the improvement comprising: a movable table mounted to the motor for releasably coupling the motor to the shade actuator for selectively supplying motor-controlled operation to the shade actuator, wherein when the motor is coupled to the shade actuator and operating power is supplied to the motor, the second end of the shade can be selectively extended over, and retracted from, the porthole; and a manually operated mechanism connected to the movable table, the release mechanism moving the movable table for decoupling the motor from the shade actuator during activation of the release mechanism, wherein if the second end of the shade is positioned away from the spring roller, the second end of the shade is retracted towards the spring roller under the influence of the rotating force, and wherein the motor is re-coupled to the shade actuator upon deactivation of the mechanism.
 13. The improved motorized window shade assembly of claim 12, further comprising a spring which biases the table in a direction towards the shade actuator so that the motor is selectively maintained in a position to control operation of the shade actuator.
 14. The improved motorized window shade assembly of claim 13, wherein the mechanism comprises an actuator arm connected to the movable table for moving the table in a direction away from the shade actuator to cause decoupling of the motor from the shade actuator.
 15. The improved motorized window shade assembly of claim 14, wherein the mechanism further comprises a cam arm.
 16. The improved window shade assembly of claim 15, wherein the panel is a panel for an airplane, wherein the first side of the porthole comprises a top of the porthole and wherein a second side of the porthole comprises a bottom of the porthole.
 17. The improved motorized window shade assembly of claim 12, wherein the shade comprises a pleated fabric and a phantom fabric, the phantom fabric being positioned between the porthole and the pleated fabric, and wherein the first end of the shade comprises a first end of the phantom fabric.
 18. The improved motorized window shade assembly of claim 15, wherein the shade comprises a pleated fabric and a phantom fabric, the phantom fabric being positioned between the porthole and the pleated fabric, and wherein the first end of the shade comprises a first end of the phantom fabric. 